Mine is, if I remember back that far, the original online name I used before http was around. Back in the ole bbs days. I used this one for probably 10 years before I picked my other handle which I have used since.
Both I picked the same way, I would pick up a book I enjoyed throw it in the air, wherever it landed I would pick a word off of the page. Ariakas was a character in a fantasy novel if I remember right, more than likely Dragonlance considering the age I picked the name at.